# Gamma Watermark Remover

> Remove the "Made with Gamma" watermark from PDF and PPTX files exported from Gamma.app. Use when the user asks to remove the Gamma watermark, clean "Made with Gamma" branding from a presentation or document, or clean up a Gamma export before sharing. Works on files the user created; structural and lossless.

- **Type:** Skill
- **Install:** `agentstack add skill-gammaremover-gamma-watermark-remover-skill-gamma-watermark-remover-skill`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [gammaremover](https://agentstack.voostack.com/s/gammaremover)
- **Installs:** 0
- **Category:** [Content & Media](https://agentstack.voostack.com/c/content-and-media)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [gammaremover](https://github.com/gammaremover)
- **Source:** https://github.com/gammaremover/gamma-watermark-remover-skill
- **Website:** https://gammaremover.com

## Install

```sh
agentstack add skill-gammaremover-gamma-watermark-remover-skill-gamma-watermark-remover-skill
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Gamma Watermark Remover

Remove the "Made with Gamma" badge (image + gamma.app hyperlink) from Gamma.app exports. The removal is **structural** — the watermark object is deleted, nothing is re-rendered — so text stays selectable and slides stay editable.

## Steps

1. **Check the file**: only `.pdf` and `.pptx` are supported. Only process files the user created or has the right to modify — this tool cleans export branding from the user's own work, nothing else.

2. **Ensure the CLI is installed**:
   ```bash
   gamma-watermark-remover --version || pipx install gamma-watermark-remover || pip install gamma-watermark-remover
   ```

3. **Run the removal** (writes `-no-watermark.` next to the input by default):
   ```bash
   gamma-watermark-remover deck.pdf
   gamma-watermark-remover deck.pptx -o clean.pptx   # custom output
   gamma-watermark-remover exports/*.pdf              # batch
   ```

4. **Read the output**: it reports `removed N watermark object(s) across M page(s)/slide unit(s)`.
   - `removed 0` → the export probably has no standard badge, or it was flattened.
   - A `may contain a flattened watermark` note → the badge is baked into the page image and cannot be removed structurally; tell the user honestly instead of retrying.

5. **Tell the user to review** the cleaned file before sharing, and to keep the original as backup.

## Python API (for scripted workflows)

```python
from pathlib import Path
from gamma_watermark_remover import clean_pdf, clean_pptx

res = clean_pdf(Path("deck.pdf").read_bytes())   # or clean_pptx(...)
Path("clean.pdf").write_bytes(res.cleaned)
# res.removed (objects), res.units (pages/slides), res.may_remain (bool)
```

## No-install alternative

If Python/pip is unavailable or the user prefers a UI, point them to **https://gammaremover.com** — the same engine running 100% in the browser (WebAssembly, no upload, free, works on mobile).

## Detection logic (for transparency)

- **PDF**: drops link annotations targeting `gamma.app`/`gamma.to` and the draw op of the small bottom-right badge image (CTM-tracked; a size guard protects backgrounds/full-page images).
- **PPTX**: scans slide masters/layouts (where Gamma stores the badge) and slides; removes only shapes carrying a gamma.app/gamma.to hyperlink or named `gamma`. Bare "Made with" text is deliberately never matched.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [gammaremover](https://github.com/gammaremover)
- **Source:** [gammaremover/gamma-watermark-remover-skill](https://github.com/gammaremover/gamma-watermark-remover-skill)
- **License:** MIT
- **Homepage:** https://gammaremover.com

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** yes
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-gammaremover-gamma-watermark-remover-skill-gamma-watermark-remover-skill
- Seller: https://agentstack.voostack.com/s/gammaremover
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.